Native sulfur (S₈) is one of the most visually striking native elements in mineralogy — pure crystals glow vivid lemon-yellow and form sharp dipyramidal forms. Sulfur is found in volcanic vents, fumaroles, hot springs, and sedimentary evaporite deposits where bacterial reduction of sulfates creates pure deposits.
Key Facts
- Mohs hardness 1.5–2.5 — soft enough to scratch with a fingernail.
- Smells weakly of sulfur when warmed by hand.
- Burns with a blue flame and characteristic SO₂ odor.
- Famous Sicilian (Cianciana, Agrigento) crystals are the world standard.
Notable Chinese Localities
Tengchong volcanic field (Yunnan) is China’s most active sulfur-producing site, with crystals deposited around fumaroles. Specimens are typically smaller than Sicilian but vivid yellow.
Found at these Localities
- Italian Volcanic Province (Vesuvius / Lipari / Etna) (意大利火山矿物产地)
- Yunnan (云南)
